| (19) |
 |
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(11) |
EP 2 204 419 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
18.04.2012 Bulletin 2012/16 |
| (43) |
Date of publication A2: |
|
07.07.2010 Bulletin 2010/27 |
| (22) |
Date of filing: 18.12.2009 |
|
| (51) |
International Patent Classification (IPC):
|
|
| (84) |
Designated Contracting States: |
|
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO
PL PT RO SE SI SK SM TR |
|
Designated Extension States: |
|
AL BA RS |
| (30) |
Priority: |
31.12.2008 US 347217
|
| (71) |
Applicant: St. Jude Medical,
Atrial Fibrillation Division, Inc. |
|
St. Paul, Minnesota 55117-9913 (US) |
|
| (72) |
Inventors: |
|
- Guo, Xiaoping
Eden Prairie
Minnesota 55347 (US)
- Johnson, David P.
Brooklyn Park
Minnesota 55428 (US)
- Stehr, Richard E.
Stillwater
Minnesota 55082 (US)
|
| (74) |
Representative: Kramer - Barske - Schmidtchen |
|
Landsberger Strasse 300
80687 München
80687 München (DE) |
|
| |
|
| (54) |
Biocompatible polycarbonate and radiopaque polymer compositions and methods of manufacturing
medical devices with same |
(57) The invention relates to biocompatible polycarbonate/polyamide polymer compositions
for use in medical and surgical devices. Additional additives, crosslinking agents,
phosphites, and optionally a radiopaque filler or fillers can be used to produce the
high performance compositions desired. The polymer compositions have improved melt
processability along with balanced or enhanced physical and mechanical properties,
especially when combined or over-extruded onto or covering other polymer layers, such
as soft and/or flexible layers commonly used in medical device applications and catheter
tips, for example. The ability to incorporate radiopaque compounds into these polymer
compositions during melt processing offers improved methods for monitoring and visualizing
medical devices when used inside the body and as well as improving the operating characteristics
of the medical device components